I'm talking about the "Apple Magic Keyboard for iPad Pro" but any Bluetooth keyboard should work too. If the battery is fully drained it shuts down and it'll ha

I'm talking about the "Apple Magic Keyboard for iPad Pro" but any Bluetooth keyboard should work too. If the battery is fully drained it shuts down and it'll have to start up (Couple of seconds). It isn't really an issue as a charge usually lasts you a couple of days, especially if it's just writing.